Rinse and shrimp and drain in a colander, reserve. In a large pot, boil water for pasta. Heat butter and olive oil in a skillet over medium heat. Add garlic and reduce heat to low. Saute garlic until soft. Add shrimp and cook uncovered for approximately 5 minutes on each side, until shrimp turns pink. Remove from heat and reserve. In a separate saucepan, heat marinara sauce and season to taste with crushed red pepper. Add shrimp to marinara sauce and keep warm. Add pasta to boiling water and cook for three minutes. Drain pasta and place in serving dish. Top with shrimp and marinara sauce.
Source: Bob & Joe's Smart Seafood Guide, A Practical Look at Seafood.
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